<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
    <style>
      h2,
      p {
        margin: 0;
      }
      .box {
        margin: 30px auto;
        width: 300px;
      }
      #user,
      #message {
        box-sizing: border-box;
        width: 300px;
        border: 1px solid #000;
        padding: 10px;
        height: 100px;
        resize: none;
        display: block;
      }
      #user {
        padding: 0 10px;
        height: 30px;
        margin-bottom: 10px;
      }
      #btn {
        display: block;
        margin: 10px auto;
        width: 60%;
        height: 40px;
      }
      #list {
        border-top: 1px solid #000;
        padding: 10px 0 0;
        margin: 0;
        list-style: none;
      }
      #list li {
        position: relative;
        font: 14px/30px "宋体";
        border-bottom: 1px solid #000;
        padding: 0 15px;
        overflow: hidden;
      }
      .clos {
        position: absolute;
        right: 5px;
        top: 10px;
      }
      .clos2 {
        position: absolute;
        right: 5px;
        top: 30px;
      }
      .replay {
        position: absolute;
        right: 5px;
        top: 35px;
      }
      .mask {
        width: 100vw;
        height: 100vh;
        background: black;
        opacity: 0.3;
        position: absolute;
        left: 0;
        top: 0;
        display: none;
      }
      .comfirm {
        width: 200px;
        height: 120px;
        background: white;
        text-align: center;
        position: absolute;
        left: 50%;
        top: 30%;
        border-radius: 5px;
        transform: translate(-50%, -50%);
        overflow: hidden;
        display: none;
      }
      .comfirm button {
        /* position: absolute; */
        /* right: 10px; */
        float: right;
        margin-top: 20px;
        margin-right: 10px;
      }
    </style>
  </head>
  <body>
    <div class="box">
      <input type="text" id="user" value="小明" />
      <textarea id="message">我就是传说中的无敌小明</textarea>
      <button id="btn">提交留言</button>
      <ul id="list">
        <li style="height: auto">
          <h2 class="user">小王说:</h2>
          <p>呼叫无敌小明</p>

          <a href="javascript:;" class="clos">删除</a>

          <a href="javascript:;" class="clos2">回复</a>
        </li>
        <li style="height: auto">
          <h2 class="user">老师说:</h2>
          <p>小明滚出去</p>
          <p>回复的内容</p>
          <a href="javascript:;" class="clos">删除</a>
        </li>
      </ul>
    </div>

    <script>
      var userEle = document.querySelector("#user");
      var messageEle = document.querySelector("#message");
      var btnEle = document.querySelector("#btn");
      var ulEle = document.querySelector("#list");
      ulEle.innerHTML = "";
      btnEle.onclick = function () {
        var userEle = user.value;
        var messageEle = message.value;
        var liEle = document.createElement("li");
        liEle.style.height = "auto";
        liEle.innerHTML = `<h2 class="user">${userEle}说:</h2>
          <p>${messageEle}</p>

          <a href="javascript:;" class="clos">删除</a>
          <div class="reply" style="display: none">
            <input type="text" /><button class="sure">确定</button
            ><button class="cancel">取消</button>
          </div>
          <a href="javascript:;" class="clos2">回复</a>`;
        //删除功能
        var delEle = liEle.querySelector(".clos");
        delEle.onclick = function () {
          this.parentNode.remove();
        };
        //回复功能
        var replyEle = liEle.querySelector(".clos2");
        replyEle.onclick = function () {
          this.style.display = "none";
          this.previousElementSibling.style.display = "block";
          // 获取取消按钮
          var cancelEle = liEle.querySelector(".cancel");
          var that = this;
          //   取消的时候点击事件
          cancelEle.onclick = function () {
            that.style.display = "block";
            that.previousElementSibling.style.display = "none";
          };
          //   点击确定按钮
          // 获取确定按钮
          var sureEle = liEle.querySelector(".sure");
          sureEle.onclick = function () {
            var replyValue = this.previousElementSibling.value;
            var pEle = document.createElement("p");
            pEle.innerHTML = replyValue;
            liEle.appendChild(pEle);
            that.style.display = "block";
            that.previousElementSibling.display = "none";
          };
        };
        ulEle.appendChild(liEle);
      };
    </script>
  </body>
</html>
